1885.] COLEOPTERA FROM JAPAN. 201 



Length 1-1 g line. 



Head with a more or less distinct central longitudinal groove, flavous, 

 rather sparingly impressed with deep irregular punctures ; antennga 

 slender, the joints elongate, third and fourth of equal length, the 

 five lower ones testaceous, the rest black. Thorax slightly narrowed 

 in front, the sides nearly straight, the posterior angles produced 

 backwards in an acute point ; posterior margin finely serrate, nar- 

 rowly black ; rest of the surface fulvous, rather closely and distinctly 

 punctate, the punctures at the sides of oblong shape, and more 

 closely approached. Scutellum slightly raised behind, testaceous, 

 margined with black. Elytra cylindrical, each elytron with ten rows 

 of deep punctures (the first very short), the fourth and fifth and the 

 seventh and eighth rows united at their ends and abbreviated 

 before the apex ; the interstices at the sides slightly convex. Legs 

 entirely fulvous. Underside black, the last abdominal segment 

 testaceous ; prosternum very broad. 



Nowata, Matsuida, Fukin, road to Oyama, Wady toge. 



Several nearly similarly coloured species of Cryptocephalus have 

 been described, of which C. hilineatus, Pabr., C. tessellatus. Germ., 

 and C. convescus, lUig., seem to be the most closely allied forms. 

 There are, however, suflicient differences to be found in G. nigro- 

 fasciatus to look upon it as a distinct species, which may be sej)a- 

 rated from either of the above by the unspotted and distinctly 

 punctured thorax, the punctures of which are distinctly elongate at 

 the sides, and by the colour of the elytra, which have only the 

 black band placed on the disk, the suture and lateral margin 

 remaining of the ground-colour ; this dark band is of very variable 

 width, occupying in some specimens nearly the entire disk, while 

 in others it is absent. These latter specimens resemble much in 

 general appearance C. minutus and allied species, but may be at 

 once distinguished by the distinctly punctured thorax. Fourteen 

 specimens of C. nigrofasciatus were obtained at the above-mentioned 

 locaUties. 



Cryptocephalus difformis, n. sp. (Plate XL fig. 6.) 



Below piceous, above black ; lateral margin of the thorax and 

 elytra, as well as their apices, more or less flavous ; thorax extremely 

 closely i)unctured ; elytra more strongly semipunctate-striate ; legs 

 yellow, the anterior tibiae compressed and dilated. 



Length 1| line. 



Head finely and rather closely punctured, flattened ; clypeus and 

 the labrum flavous. Antennae two thirds the length of the body, 

 black, the four lower joints flavous or fulvous, third and fourth 

 equal, the six terminal joints slightly flattened. Thorax transverse, 

 greatly widened posteriorly, the sides with a rounded and flattened 

 margin ; surface extremely closely and rather finely punctured 

 throughout, black, the extreme lateral, and sometimes also the 

 anterior margin, flavous. Scutellum flat, broadly ovate. Elytra 

 as broad as the thorax at the base, not widened behind, much more 

 strongly, distantly, and rather regularly punctured, the punctures 



